| Message ID | 20240629-rk-hdptx-compile-test-fix-v1-1-c86675ba8070@collabora.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | phy: phy-rockchip-samsung-hdptx: Select CONFIG_MFD_SYSCON | expand |
diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig index 08b0f4345760..490263375057 100644 --- a/drivers/phy/rockchip/Kconfig +++ b/drivers/phy/rockchip/Kconfig @@ -86,7 +86,9 @@ config PHY_ROCKCHIP_PCIE config PHY_ROCKCHIP_SAMSUNG_HDPTX tristate "Rockchip Samsung HDMI/eDP Combo PHY driver" depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF + depends on HAS_IOMEM select GENERIC_PHY + select MFD_SYSCON select RATIONAL help Enable this to support the Rockchip HDMI/eDP Combo PHY
Compile testing configurations without REGMAP support enabled results in a bunch of errors being reported: ../drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c:569:21: error: variable ‘rk_hdptx_phy_regmap_config’ has initializer but incomplete type 569 | static const struct regmap_config rk_hdptx_phy_regmap_config = { | ^~~~~~~~~~~~~ ../drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c:570:10: error: ‘const struct regmap_config’ has no member named ‘reg_bits’ 570 | .reg_bits = 32, | ^~~~~~~~ Note that selecting REGMAP alone is not enough, because of the following liker error: phy-rockchip-samsung-hdptx.c:(.text+0x10c): undefined reference to `__devm_regmap_init_mmio_clk' Instead of the obvious fix to enable REGMAP_MMIO, select MFD_SYSCON, which implicitly enables REGMAP_MMIO as well. The rationale is that the driver has been already relying on the syscon functionality. Moreover, without MFD_SYSCON enabled, the test coverage is reduced, since the linker might not detect any potential undefined references following syscon_regmap_lookup_by_phandle() invocation in rk_hdptx_phy_probe() body. That is because the function would unconditionally return -ENOTSUP, hence the compiler is free to optimize out any unreachable code. Finally ensure PHY_ROCKCHIP_SAMSUNG_HDPTX depends on HAS_IOMEM, as required by MFD_SYSCON. Fixes: 553be2830c5f ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver") Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> --- drivers/phy/rockchip/Kconfig | 2 ++ 1 file changed, 2 insertions(+) --- base-commit: 1eb586a9782cde8e5091b9de74603e0a8386b09e change-id: 20240629-rk-hdptx-compile-test-fix-bb0d96a0b225